Synthesis and DPPH radical scavenging activity of novel compounds obtained from tyrosol and cinnamic acid derivatives
作者:Maurizio Barontini、Roberta Bernini、Isabella Carastro、Patrizia Gentili、Annalisa Romani
DOI:10.1039/c3nj01180a
日期:——
Tyrosol, a naturally occurring phenolic compound poorly attractive as an antioxidant because of its weak efficacy, was used as starting material to obtain novel compounds. The synthesis is based on a trifluoroacetic acid-mediated hydroarylation of cinnamic esters with tyrosol to produce 4-aryl-3,4-dihydrocoumarins, molecules of biological interest, followed by a basic hydrolysis to give the corresponding
酪醇是一种天然存在的酚类化合物,由于其功效较弱,因此作为抗氧化剂的吸引力很差,被用作起始原料来获得新型化合物。该合成基于肉桂酸酯与酪醇的三氟乙酸介导的氢化芳基化反应,以产生具有生物学意义的分子4-芳基-3,4-二氢香豆素,然后进行碱性水解以生成相应的开环产物。尚未进行的机理研究证实,第一步是由亲电子芳族取代和分子内酯交换反应产生的。最终产品表现出的DPPH自由基清除活性明显高于酪醇。